In the UK, the majority of firms now offer Tax Investigation Insurance to their clients.
Many firms make a lot of additional income from offering Fee Protection to their clients.
Mobile phone giant Vodafone is under pressure again after it emerged it did not pay any corporation tax in the UK last year.
The BBC’s Panorama has investigated how some of the UK's top companies are using a tax haven in Luxembourg to save millions in corporation tax.
After several weeks of debate and backroom lobbying, HMRC is due to release a “business entities test” to help personal services companies assess their risk of being caught by IR35 rules.
Officials from HMRC have carried out several raids after looking into allegations t
HMRC’s programme of Business Record Checks is going back to the drawing board.
HM Treasury will continue in its fight against tax avoidance by the UK's wealthiest people with the recruitment of an additional 2,250 tax inspectors.
Gordon Ramsay has appointed a former tax inspector who investigated the celebrity chef’s financial affairs six years ago.